Eventlet

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* ssl: IMPORTANT DoS FIX do_handshake_connect=False in server accept(); Thanks to Garth Mollett
* patcher: patch existing threading locks; Thanks to Alexis Lee
* green.urllib2: missing patched ssl module; Thanks to Collin RM Stocks
* wsgi: environ[headers_raw] tuple of unmodified name: value pairs
* test against modern pyopenssl 16.0.0 for Python 2.7+; Thanks to Victor Stinner
* wsgi: document compatibility with python `logging`
* Minor grammatical improvements and typo fixes to the docs; Thanks to Steven Erenst

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* wsgi: change TCP_NODELAY to TCP_QUICKACK, ignore socket error when not available

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* wsgi: Use buffered writes - fixes partial socket.send without custom
writelines(); Github issue 295
* wsgi: TCP_NODELAY enabled by default

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* wsgi: Fix data loss on partial writes (socket.send); Thanks to Jakub Stasiak

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* IMPORTANT: do not use Eventlet 0.18.0 and 0.18.1
* patcher: Fix AttributeError in subprocess communicate()
* greenio: Fix "TypeError: an integer is required" in sendto()

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* IMPORTANT: do not use Eventlet 0.18.0 and 0.18.1
* greenio: Fixed a bug that could cause send() to start an endless loop on
ENOTCONN; Thanks to Seyeong Kim
* wsgi: Fixed UNIX socket address being trimmed in "wsgi starting" log; Thanks
to Ihar Hrachyshka
* ssl: Ported eventlet.green.OpenSSL to Python 3; Thanks to Victor Stinner
* greenio: Made read() support buflen=-1 and added readall() (Python 3);
Thanks to David Szotten
* wsgi: Made the error raised in case of chunk read failures more precise (this
should be backwards compatible as the new exception class,
wsgi.ChunkReadError, is a subclass of ValueError which was being used there
before); Thanks to Samuel Merritt
* greenio: Fixed socket.recv() sometimes returning str instead of bytes on
Python 3; Thanks to Janusz Harkot
* wsgi: Improved request body discarding
* websocket: Fixed TypeError on empty websocket message (Python 3); Thanks to
Fukuchi Daisuke
* subprocess: Fixed universal_newlines support
* wsgi: Output of 0-byte chunks is now suppressed; Thanks to Samuel Merritt
* Improved the documentation; Thanks to Ramakrishnan G, ashutosh-mishra and
Azhar Hussain
* greenio: Changed GreenFileIO.write() (Python 3) to always write all data to
match the behavior on Python 2; Thanks to Victor Stinner
* subprocess: Fixed missing subprocess.mswindows attribute on Python 3.5;
Thanks to Josh VanderLinden
* ssl/monkey patching: Fixed a bug that would cause merely importing eventlet
to monkey patch the ssl module; Thanks to David Szotten
* documentation: Added support for building plain text documentation; thanks
to Levente Polyak
* greenio: Fixed handling blocking IO errors in various GreenSocket methods;
Thanks to Victor Stinner
* greenio: Fixed GreenPipe ignoring the bufsize parameter on Python 2; Thanks
to Phus Lu
* backdoor: Added Unix and IPv6 socket support; Thanks to Eric Urban

Backwards incompatible:

* monkey patching: The following select methods and selector classes are now
removed, instead of being left in their respective modules after patching
even though they are not green (this also fixes HTTPServer.serve_forever()
blocking whole process on Python 3):

* select.poll
* select.epoll
* select.devpoll
* select.kqueue
* select.kevent
* selectors.PollSelector
* selectors.EpollSelector
* selectors.DevpollSelector
* selectors.KqueueSelector

Additionally selectors.DefaultSelector points to a green SelectSelector

* greenio: Fixed send() to no longer behave like sendall() which makes it
consistent with Python standard library and removes a source of very subtle
errors